Question

Решите уравнение (x+2)(x-3)-(x-5)(x+5)=x^2-x

Answer 1

x^2 - 3x + 2x - 6 - (x^2 - 25) = x^2  - x
x^2 - x - 6 - x^2 + 25 = x^2 - x
- x + 19 = x^2 - x
x^2 = 19
x= ± √19